A method for making a carbon nanotube composite includes: forming a self-supporting carbon nanotube film structure; providing a hardenable liquid material; immersing the carbon nanotube film structure in the hardenable liquid material; and solidifying the hardenable liquid material to achieve a carbon nanotube composite. The control interface employs a plurality of multi-functional switches located proximate to the driver in combination with a display that provides an indicia of the vehicle function controlled by each switch. A first address of a first server that has failed and to which access is to be prohibited is moved from the first to the third set.